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PSG
,The Programmable Sound Generator (PSG) of the CPC is an AY-3-8912 chip. It is able to output three separate sound channels (named Channel A, B and C). Each channel can be used to output tones and/or white noise.
== PSG Registers ==
== Block Diagram ==
*[[File:PSG Block Diagram.png]]
== Schematics ==
The PSG is driven by an external clock at 1MHz provided by the [[Gate Array]].
The AY chip has an internal clock divider by 8 which means that it works internally at 125KHz, outputting 125,000 samples per second for each channel.
The BC1 and A8 pins are always equal to 1 as they are connected to +5V.
== Datasheet ==
